PROBLEM TO BE SOLVED: To provide a mist atomizing device for a bath which is capable of simplifying a piping configuration even while evading occurrence of inconvenience such as the early degradation in a heat exchanger for water heating of a water heater.SOLUTION: The mist atomizing device for a bath includes: water heating means 29 for heating water supplied from a water heater D to mist atomizing means B and mist atomizing amount change means 37 for changing a mist atomizing amount from the mist atomizing means B so as to switch to a large amount atomization state in which a water passing amount of the water heater D becomes equal to or larger than a set amount for combustion and a small amount atomization state in which the water passing amount of the water heater D becomes smaller than the set amount for combustion. The water heater D is configured to supply the water from a water supply path 48 to the mist atomizing means B after making it flow through the heat exchanger 45 for water heating and heating it when the water passing amount is equal to or larger than the set amount for combustion, and to supply the water from the water supply path 48 to the mist atomizing means B by making it flow without passing hot water through the heat exchanger 45 for water heating when the water passing amount is smaller than the set amount for combustion.COPYRIGHT: (C)2012,JPO&INPIT【課題】給湯器の湯水加熱用熱交換器が早期に劣化する等の不都合が発生することを回避しながらも、配管構成の簡素化を図ることができる浴用ミスト噴出装置を提供する。【解決手段】給湯器Dからミスト噴出手段Bに供給される湯水を加熱する湯水加熱手段29と、給湯器Dの通水量が燃焼用設定量以上になる多量噴出状態と給湯器Dの通水量が燃焼用設定量未満になる少量噴出状態とに切換えるように、ミスト噴出手段Bからのミスト噴出量を変更するミスト噴出量変更手段37とが設けられ、給湯器Dが、湯水の通水量が前記燃焼用設定量以上のときには、給水路48からの湯水を、湯水加熱用熱交換器45を通して流動させて加熱したのちミスト噴出手段Bに供給し、且つ、湯水の通水量が燃焼用設定量未満のときには、給水路48からの湯水を、湯水加熱用熱交換器45を通過させない状態で流動させてミスト噴出手段Bに供給するように構成されている。【選択図】図4
